Multilayer formation in spin-coated thin films of low-bandgap polyfluorene: PCBM blends

被引：120

作者：

Björström, CM

Bernasik, A

Rysz, J

Budkowski, A

Nilsson, S

Svensson, M

Andersson, MR

Magnusson, KO

Moons, E ^{[1
]}

机构：

[1] Karlstad Univ, Dept Phys, SE-65188 Karlstad, Sweden

[2] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland

[3] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland

[4] Chalmers Univ Technol, Dept Mat & Surface Chem Polymer Technol, SE-41296 Gothenburg, Sweden

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2005年 / 17卷 / 50期

关键词：

D O I：

10.1088/0953-8984/17/50/L01

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Blends of the low-bandgap polymer poly [(9,9-dioctylfluorenyl-2,7-diyl)-co-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole] (APFO-3) and the fullerene derivative [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) were spin-coated from chloroform solution into thin films, which were examined with dynamic secondary ion mass spectrometry. For blends with high PCBM content, the depth profiles show composition waves that were caused by surface-directed phase separation during spin-coating. The formation of such multilayer structures by spontaneous self-stratification is likely to have implications for optimization strategies for the performance of organic solar cells.

引用

页码：L529 / L534

页数：6

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